| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Burns Western Civilizations: Study Guide, 7th Edition | 978-0-393-09783-2 (0-393-09783-8) | 1968 |
| Western Civilizations | 978-0-393-95433-3 (0-393-95433-1) | 1984 |
L. R. · P.L. Ralph · P R · P Ralph · Philip L. · Philip Lee Ralph · Philip R. · Philip Ralph